Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Characteristics of AC Power Electroluminescent Device with the Double Dielectric Layers of Thin and Thick Barium Titanate Films

$BaTiO_3$ 박막과 후막의 2중 유전체로 구서된 AC 분산형 ELD의 특성

  • 이주현 (선문대학교 재료공학과) ;
  • 채상훈 (선문대학교 재료공학과) ;
  • ;
  • 김학수 (선문대학교 화학공학과) ;
  • 박성 (명지대학교 유기재료공학과)
  • Published : 2001.08.01
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Abstract

It is known that amorphous BaTiO$_3$ thin films have good insulating properties[1][2]. In this investigation, amorphous BaTiO$_3$ thin films were deposited by rf magnetron sputtering on thick BaTiO$_3$ films of AC powder EL devices which were fabricated by screen-printing. The electrical and optical properties of the EL devices were then investigated. Adding amorphous BaTiO$_3$ thin film, it showed that leakage current density was decreased. Especially, leakage current density was decreased more with he sample of 0.5-hour deposition than the sample of 4-hours deposition. This result led to the improvement of luminous efficiency by 11%. It could be concluded that proper amorphous BaTiO$_3$ thin film deposition improved the surface property of dielectric layer.

Keywords

References

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